12523467136 has 32 divisors (see below), whose sum is σ = 25003804680. Its totient is φ = 6248002560.

The previous prime is 12523467091. The next prime is 12523467137. The reversal of 12523467136 is 63176432521.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12523467137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48550 + ... + 165541.

Almost surely, 2^12523467136 is an apocalyptic number.

12523467136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12523467136 is a deficient number, since it is larger than the sum of its proper divisors (12480337544).

12523467136 is an equidigital number, since it uses as much as digits as its factorization.

12523467136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214562 (or 214550 counting only the distinct ones).

The product of its digits is 181440, while the sum is 40.

Adding to 12523467136 its reverse (63176432521), we get a palindrome (75699899657).

The spelling of 12523467136 in words is "twelve billion, five hundred twenty-three million, four hundred sixty-seven thousand, one hundred thirty-six".